<template>
	<h1>App..</h1>
	<ul>
		<li v-for="(value, key) in person" :key="key">{{ key }} - {{ value }}</li>
	</ul>
	<button @click="person.age = 18">add</button>
</template>

<script>
export default {
	name: "App",
	data() {
		return {
			person: {
				name: "haijing",
			},
		};
	},
};
</script>
